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| 本帖產(chǎn)生 1 個(gè) 翻譯EPI ，點(diǎn)擊這里進(jìn)行查看 | |||
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ouyangshunli木蟲 (正式寫手)
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[求助]
簡(jiǎn)化一個(gè)長(zhǎng)句子
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| 這個(gè)句子（The decrease of the C=C stretching vibration frequency for polyene of increased the conjugation length has been explained by assuming that, with the increase of the conjugation length, the π-electrons delocalization tends to equalize the CC bond lengths, thereby decreasing the bond order of C=C bonds and causing a lower C=C stretching frequency for longer polyene.）比較長(zhǎng)，請(qǐng)高手幫忙簡(jiǎn)化成簡(jiǎn)單明了的一兩句。 |
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捐助貴賓 (著名寫手)
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ouyangshunli: 金幣+15, 翻譯EPI+1, ★★★★★最佳答案 2015-08-08 22:41:17
ouyangshunli: 金幣+15, 翻譯EPI+1, ★★★★★最佳答案 2015-08-08 22:41:17
| The C=C stretching vibration frequency is decreased by the increased conjugation length of polyene, because with the increase of the conjugation length, the π-electrons delocalization tends to equalize the CC bond lengths, for instance decreasing the bond order of C=C bonds, thus resulting in a lowered lower C=C stretching frequency for longer polyene. |
4樓2015-08-07 10:16:23
ken81720711
木蟲 (正式寫手)
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ouyangshunli: 金幣+5, ★★★很有幫助, 謝謝您的幫助！ 2015-08-08 22:41:59
ouyangshunli: 金幣+5, ★★★很有幫助, 謝謝您的幫助！ 2015-08-08 22:41:59
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Associating with the increase of the conjugation length, the π-electrons delocalization tends to equalize the CC bond lengths. In this case, the bond order of C=C bonds might decrease,and hence a lower C=C stretching frequency for longer conjugation length of polyene would occur. [ 發(fā)自小木蟲客戶端 ] |
2樓2015-08-07 00:56:51
ken81720711
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3樓2015-08-07 01:04:14
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